<template>
  <div>{{ x }}</div>
  <button @click="x++">+</button>
  <div>{{ moment().format("yyyy-MM-dd HH:mm:ss") }}</div>
</template>

<script setup lang="ts">
  import { ref } from 'vue'
  import moment from 'moment'
  const x = ref<number>(456)
</script>

<style lang="less">
@green: green;
html, body {
  background-color: @green;
}
</style>